<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;

class StoreGoodsCategoryRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        return true;
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        $rules = [
            'name' => 'required|unique:goods_categories',
        ];

        if ($this->pid) {
            $rules['pid'] = 'exists:goods_categories,id';
        }

        return $rules;
    }

    public function messages()
    {
        return [
            'name.required' => '分类名称不能为空',
            'name.unique' => '分类名称已存在',
            'pid.exists' => '父分类不存在',
        ];
    }
}
